Hello, readers welcome to the new tutorial. Here we will discuss Difference Between AC and DC Motor. The basic difference is that the input supply given to them for an operation like an AC motor needs an AC supply and dc needs dc supply. With that their structure is also different from one another which makes them different from one. A motor is a device that uses electrical energy to convert it into mechanical energy.
In this post, we will discuss different parameters for finding the main differences between these two motors so let get started Difference Between AC and DC Motor
Difference Between AC Motor and DC Motor
What is AC Motor
- The type of motor that operates on the AC is called ac motor. There are two main parts of this motor stating part The is external consists of windings where ac supply is given in the results rotating magnetic field created and the second part is the inner part has a rotor connected to the output shaft to generate the other rotating field.
- To generate a magnetic field at the rotor permanent magnet dc ac windings and reluctance saliency are used.
- Linear configured AC motors work on the same principle as rotating motors following the difference that their static and moveable parts are configured in a linear fashion causes to produce linear motion in place rotation
- These motors work on the single-phase and three-phase power supply as single-phase and three-phase induction motors
- They do not need commutation as in DC motors
- These motors have three input terminals
- No need for carbon brushes
- Used in industries
AC Motor Working Principle
- The commonly used types of ac motors are induction motors and synchronous motors. In the case of induction motors working principle is that the difference between in speeds of the stator rotating magnetic field and rotor shaft speed called slip produces the rotor current in the motor’s rotor.
- So there is no creation of torque in an induction motor close to synchronous speed where slips are not produced.
- The operation of the synchronous motor does not depend on the slip but uses a permanent magnet. salient poles.
- The torque generated by the synchronous motor is rated at synchronous speed.
What is DC Motor
- DC motor is a type of rotating motor that transforms the DC input supply in the mechanical energy. Its basic category depends on the forces generated by the magnetic fields
- These motors come with an inner structure that varies the current direction in any part of the motor, such as electromechanical and electronic.
- These motors are very commonly used since they get power from the DC from the distribution power system.
- There are different techniques used for regulating the speed of the motor, like variable volts and changing the current strength in the windings field.
- Small-structure DC motors are employed in different devices and toys. The universal motor can work at the DC supply that has less weight and comes with brushes employed for different power tools.
- Large-size DC motors are used for electrical vehicles, elevators, and running the steel mills’ rollings.
- Power Electronic has been increasing the use of AC motors in place of DC motors.
- It gets power from a battery and cells.
- These motors consist of commutation and also have carbon brushes.
- It is a self-started motor that does not need external excitation.
- If damages are not easy to maintain.
AC vs. DC Motor
AC Motor
- Type of motor that works through AC.
- Its working life is longer than DC motors.
- It needed less maintenance.
- Its common types are AC motors and induction motors.
- It can work on a single-phase or 3-phase supply.
- It has lower efficiency than DC motors.
- It is used for applications where high speed is needed.
DC Motor
- The motors that operate on DC current and convert it into mechanical energy
- Its working life is longer than AC motors and needs high maintenance.
- Its basic types are brushless DC motors and motors without brushes.
- It operated in a single-phase supply.
- It is a high-efficiency motor.
- It’s used for speed control functions.
Why use a DC motor over an AC motor?
- A DC motor comes with features of high starting torque and stops, reversing featues, and variable speed based on voltage, and it is easier to use and lower cost than AC motors.
Which is a faster AC or DC motor?
- AC motors are slow to medium-speed features where speed is constant and also for varied loads. DC motors come with high-speed range but have a sensitivity for the load to weight/volume changes.
What is the difference between an AC generator and a DC motor?
- The AC generator produces AC that periodically changes directions. For a DC generator, DC flows in a single direction. For AC generator winding where current flows are constant and magent moves.
Which is better, AC or DC?
- AC is low-cost and can be easily produced than DC. AC is transmitted for longer distances without more energy losses, as compared to DC. The power losses at the time of transmission in AC are lower than in DC.
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That is all about the Difference Between AC and DC Motor. all details have been explained if you have any query ask in the comments. Thanks for reading.
